Mar 31, 2026 filings. Quarterly 13F reports arrive up to 45 days after quarter end; this register is filed through May 29, 2026.
2,012 institutional managers reported holding KLAC for the quarter ended Mar 31, 2026. Together they hold about 9% of shares outstanding; the top 10 hold 4%. 273 opened new positions; 132 closed out. Complete ranked register from SEC 13F filings.
| manager | shares | % out | value (Mar 31, 2026 close) | change | held since |
|---|---|---|---|---|---|
| Vanguard Group | 13.91M | 1.06% | $2.05B | unchanged | ≤2013 |
| BlackRock | 12.60M | 0.96% | $1.86B | added +1.7% | ≤2013 |
| State Street | 6.15M | 0.47% | $906.3M | trimmed -1.1% | ≤2013 |
| FMR (Fidelity) | 4.40M | 0.33% | $648.3M | added +73% | ≤2013 |
| Capital Group (American Funds) | 4.08M | 0.31% | $601.5M | added +11.9% | 2025 Q1 |
| Geode Capital | 3.67M | 0.28% | $541.0M | added +4.6% | ≤2013 |
| Capital International Investors | 2.73M | 0.21% | $401.8M | trimmed -50% | 2019 Q3 |
| PRIMECAP Management | 2.44M | 0.18% | $359.0M | trimmed -15.2% | ≤2013 |
| Goldman Sachs | 1.82M | 0.14% | $267.8M | added +28.5% | ≤2013 |
| Morgan Stanley | 1.77M | 0.14% | $261.2M | added +2.3% | ≤2013 |
| T. Rowe Price | 1.68M | 0.13% | $247.5M | trimmed -37.9% | ≤2013 |
| Invesco | 1.66M | 0.13% | $244.8M | added +4.7% | ≤2013 |
| UBS | 1.66M | 0.13% | $244.0M | added +10% | ≤2013 |
| MFS Investment Management | 1.64M | 0.13% | $241.8M | trimmed -5.7% | 2020 Q2 |
| Northern Trust | 1.57M | 0.12% | $231.5M | trimmed -1.9% | ≤2013 |
| VAN ECK Associates CORP | 1.50M | 0.11% | $220.4M | trimmed -3.9% | 2017 Q1 |
| Wellington Management | 1.44M | 0.11% | $212.2M | added +228.9% | 2016 Q3 |
| State Farm Mutual Automobile Insurance CO | 1.40M | 0.11% | $206.7M | trimmed -1.2% | ≤2013 |
| Bank OF America CORP /DE/ | 1.31M | 0.10% | $192.5M | trimmed -12.6% | ≤2013 |
| Janus Henderson | 1.24M | 0.09% | $182.7M | trimmed -8.3% | ≤2013 |
| Amundi | 1.10M | 0.08% | $161.5M | added +37% | 2016 Q4 |
| Legal & General Group PLC | 1.03M | 0.08% | $152.4M | trimmed -0.5% | ≤2013 |
| Charles Schwab Investment Management | 987.6k | 0.07% | $145.5M | added +3.1% | ≤2013 |
| Capital Research Global Investors | 976.4k | 0.07% | $143.8M | added +408.7% | 2024 Q4 |
| BNY Mellon | 888.4k | 0.07% | $130.9M | trimmed -9.4% | ≤2013 |
| Ameriprise Financial INC | 886.7k | 0.07% | $130.6M | trimmed -3.6% | ≤2013 |
| Arrowstreet Capital | 791.3k | 0.06% | $116.5M | added +2.2% | 2023 Q3 |
| Uhlmann Price Securities, LLC | 781.1k | 0.06% | $115.0M | added +209302.7% | 2024 Q3 |
| Pictet Asset Management Holding SA | 721.9k | 0.06% | $106.3M | trimmed -18.7% | ≤2013 |
| Dimensional Fund Advisors | 716.1k | 0.05% | $105.5M | unchanged | ≤2013 |
| Swedbank Robur | 637.8k | 0.05% | $93.9M | trimmed -16.5% | 2021 Q1 |
| CalPERS | 594.6k | 0.04% | $87.6M | trimmed -2.2% | ≤2013 |
| Franklin Resources | 582.1k | 0.04% | $85.7M | trimmed -14% | 2016 Q2 |
| Alkeon Capital Management LLC | 580.9k | 0.04% | $85.6M | trimmed -18.2% | 2017 Q2 |
| First Trust Advisors LP | 565.9k | 0.04% | $83.3M | trimmed -13.5% | ≤2013 |
| Barclays PLC | 553.2k | 0.04% | $81.5M | trimmed -19.4% | ≤2013 |
| Parnassus Investments | 538.4k | 0.04% | $79.3M | trimmed -13.7% | 2020 Q1 |
| Royal Bank OF Canada | 528.5k | 0.04% | $77.8M | trimmed -3.6% | ≤2013 |
| BNP Paribas Financial Markets | 492.7k | 0.04% | $72.6M | trimmed -15.9% | ≤2013 |
| Acadian Asset Management | 468.2k | 0.04% | $69.0M | added +277.5% | 2016 Q4 |
| Deutsche Bank AG\ | 465.0k | 0.04% | $68.5M | added +9.1% | 2013 Q3 |
| Grantham, Mayo, Van Otterloo & CO. LLC | 461.2k | 0.04% | $67.9M | trimmed -9.3% | 2017 Q3 |
| Schroder Investment Management Group | 428.6k | 0.03% | $63.1M | added +7% | 2016 Q4 |
| AllianceBernstein | 419.4k | 0.03% | $61.8M | added +66.1% | ≤2013 |
| Mitsubishi UFJ Asset Management CO., LTD. | 397.0k | 0.03% | $58.5M | added +4.5% | ≤2013 |
| Citigroup INC | 388.3k | 0.03% | $57.2M | added +2.6% | ≤2013 |
| Swiss National Bank | 385.6k | 0.03% | $56.8M | added +6.6% | ≤2013 |
| Jennison Associates LLC | 384.5k | 0.03% | $56.6M | opened | 2026 Q1 |
| Victory Capital Management INC | 380.6k | 0.03% | $56.1M | trimmed -31.9% | 2013 Q4 |
| TD Asset Management INC | 373.1k | 0.03% | $55.0M | trimmed -9.9% | ≤2013 |
Largest 50 of 2,012 shown; the full ranked, searchable register is at boothcheck.com/holders/KLAC. Related filers are grouped using the filings' own included-manager declarations. Historically, several managers opening new positions in the same quarter said almost nothing about the quarter that followed (59,118 cases since 2013). A filed record, not a forecast. Nothing here is investment advice.